Bug 1456712 (CVE-2017-9287)

Summary:	CVE-2017-9287 openldap: Double free vulnerability in servers/slapd/back-mdb/search.c
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	csutherl, dandread, gzaronik, huwang, jclere, jsynacek, lgao, mbabacek, mhonek, myarboro, pkis, rmeggins, slawomir, twalsh, weli, yozone
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A double-free flaw was found in the way OpenLDAP's slapd server using the MDB backend handled LDAP searches. A remote attacker with access to search the directory could potentially use this flaw to crash slapd by issuing a specially crafted LDAP search query.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 03:13:37 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1456713, 1458210
Bug Blocks:	1456714

Description Adam Mariš 2017-05-30 08:18:22 UTC

servers/slapd/back-mdb/search.c in OpenLDAP through 2.4.44 is prone to a double free vulnerability. A user with access to search the directory can crash slapd by issuing a search including the Paged Results control with a page size of 0.

Upstream patch:

https://www.openldap.org/devel/gitweb.cgi?p=openldap.git;a=commit;h=0cee1ffb6021b1aae3fcc9581699da1c85a6dd6e

Comment 1 Adam Mariš 2017-05-30 08:18:51 UTC

Created openldap tracking bugs for this issue:

Affects: fedora-all [bug 1456713]

Comment 7 Dhiru Kholia 2017-06-05 12:41:01 UTC

External References:

http://www.openldap.org/its/?findid=8655

Comment 10 Dhiru Kholia 2017-06-06 11:33:12 UTC

Statement:

This issue does not affect the versions of OpenLDAP as shipped with Red Hat Enterprise Linux 6 and 7 as they don't use the affected MDB backend in their default configurations. Red Hat Product Security has rated this issue as having Moderate security impact. A future update may address this issue. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.

Comment 12 errata-xmlrpc 2017-08-01 20:19:52 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2017:1852 https://access.redhat.com/errata/RHSA-2017:1852